Estimation of radiative effect of a heavy dust storm over northwest China using Fu-Liou model and ground measurements

详细信息    查看全文

• 作者：Wencai Wang^a ; Jianping Huang^a ; ^{hjp@lzu.edu.cn} ; Tian Zhou^a ; Jianrong Bi^a ; Lei Lin^a ; Yonghang Chen^a ; ^b ; Zhongwei Huang^a ; Jing Su^a
• 关键词：Dust aerosol ; Radiative forcing ; Fu&ndash ; Liou model
• 刊名：Journal of Quantitative Spectroscopy and Radiative Transfer
• 出版年：2013
• 出版时间：June, 2013
• 年：2013
• 卷：122
• 期：Complete
• 页码：114-126
• 全文大小：2277 K

文摘

A heavy dust storm that occurred in Northwestern China during April 24-30 2010 was studied using observational data along with the Fu-Liou radiative transfer model. The dust storm was originated from Mongolia and affected more than 10 provinces of China. Our results showed that dust aerosols have a significant impact on the radiative energy budget. At Minqin (102.959¡ãE, 38.607¡ãN) and Semi-Arid Climate and Environment Observatory of Lanzhou University (SACOL, 104.13¡ãE, 35.95¡ãN) sites, the net radiative forcing (RF) ranged from 5.93 to 35.7 W m^?2 at the top of the atmosphere (TOA), ?6.3 to ?30.94 W m^?2 at surface, and 16.77 to 56.32 W m^?2 in the atmosphere. The maximum net radiative heating rate reached 5.89 K at 1.5 km on 24 April at the Minqin station and 4.46 K at 2.2 km on 29 April at the SACOL station. Our results also indicated that the radiative effect of dust aerosols is affected by aerosol optical depth (AOD), single-scattering albedo (SSA) and surface albedo. Modifications of the radiative energy budget by dust aerosols may have important implications for atmospheric circulation and regional climate.